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载有库拉索芦荟和 Copaiba 油树脂的壳聚糖膜用于伤口敷料:微生物渗透、细胞毒性和体内概念验证。

Aloe vera and copaiba oleoresin-loaded chitosan films for wound dressings: microbial permeation, cytotoxicity, and in vivo proof of concept.

机构信息

Institute of Chemistry, Environmental and Pharmaceutics Sciences, Federal University of São Paulo, Diadema, São Paulo, Brazil.

Department of Pharmacy and Pharmaceutical Technology, School of Pharmacy, University of Granada, Granada, Spain; Department of Pharmacy, Federal University of Rio Grande do Norte, Natal, Brazil.

出版信息

Int J Pharm. 2023 Mar 5;634:122648. doi: 10.1016/j.ijpharm.2023.122648. Epub 2023 Jan 26.

Abstract

Chitosan films are commonly used for wound dressing, provided that this polymer has healing, mucoadhesiveness and antimicrobial properties. These properties can be further reinforced by the combination of chitosan with polysaccharides and glycoproteins present in aloe vera, together with copaiba oleoresin's pharmacological activity attributed to sesquiterpenes. In this work, we developed chitosan films containing either aloe vera, copaiba oil or both, by casting technique, and evaluated their microbial permeation, antimicrobial activity, cytotoxicity, and in vivo healing potential in female adult rats. None of the developed chitosan films promoted microbial permeation, while the cytotoxicity in Balb/c 3 T3 clone A31 cell line revealed no toxicity of films produced with 2 % of chitosan and up to 1 % of aloe vera and copaiba oleoresin. Films obtained with either 0.5 % chitosan or 0.5 % copaiba oleoresin induced cell proliferation which anticipate their potential for closure of wound and for the healing process. The in vivo results confirmed that tested films (0.5 % copaiba-loaded chitosan film and 0.5 % aloe vera-loaded chitosan film) were superior to a commercial dressing film. For all tested groups, a fully formed epithelium was seen, while neoformation of vessels seemed to be greater in formulations-treated groups than those treated with the control. Our work confirms the added value of combining chitosan with aloe vera and copaiba oil in the healing process of wounds.

摘要

壳聚糖膜常用于伤口敷料,因为这种聚合物具有愈合、粘膜粘附性和抗菌特性。通过将壳聚糖与存在于芦荟中的多糖和糖蛋白结合,并结合库巴油的药理学活性归因于倍半萜,可以进一步增强这些特性。在这项工作中,我们通过浇铸技术开发了含有芦荟、库巴油或两者的壳聚糖膜,并评估了它们的微生物渗透、抗菌活性、细胞毒性以及在雌性成年大鼠体内的愈合潜力。开发的壳聚糖膜均未促进微生物渗透,而在 Balb/c 3T3 克隆 A31 细胞系中进行的细胞毒性实验表明,由 2%壳聚糖和高达 1%的芦荟和库巴油制成的膜没有毒性。由 0.5%壳聚糖或 0.5%库巴油制成的膜诱导细胞增殖,预示着它们在封闭伤口和愈合过程中的潜在用途。体内结果证实,测试的膜(载有 0.5%库巴油的壳聚糖膜和载有 0.5%芦荟的壳聚糖膜)优于商业敷料膜。对于所有测试组,均可见完全形成的上皮,而在制剂处理组中,新生血管的形成似乎比对照组更大。我们的工作证实了在伤口愈合过程中壳聚糖与芦荟和库巴油结合的附加值。

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